TASK TECHNIQUE OF LABORATORY
“The Journal Technique of Laboratory “
By :
Nama
: Bella Rhea lavifa Sanjaya
NIM
: 120210153038
STUDY PROGRAM OF BIOLOGY EDUCATION
DEPARTEMENT OF MATHEMATIC AND SCIENCE
FACULTY OF TEACHER TRAINING AND EDUCATION
UNIVERSITY OF
JEMBER
2012
This is the first time I knew laboratory techniques. It felt
like a little tricky and confusing if I have to set anything that should be
done in the mastery of laboratory techniques. A lot of the equipment I need to
understand and policies should I understand about the lab. It requires maturity
in attitude. But since the beginning, I hope I can get through it well and able
to deal with all the obstacles I would encounter while studying technique of
laboratory
At that time I came
very late. With vantofel shoes made uncomfortable, I walked quickly from boarding. Arriving in
class X1, I saw Mrs. Kamalia Fikri, S. Pd., M. Pd has been dealing with laptop
sitting in front of my friends. At that time, I along with my late wulan also soon find a seat.
Sadly shortly after we sat down, the lesson is over and we were confused with
what the task given to us.
"Microtome"
I heard it first from my friend who happened to be recorded Rasmiyana task for
me. I was more confused after I asked she how the writing of the microtome. The
first thing I did for finding out what it is about microtome microtome, I still
do not understand what it microtome. Hehehe .. feels confused. But I started to
source for resources and eventually i finish the required task. A paper
containing the definitions, functions, method of storage and how to get it.
Since the task has been completed, I was sent to the address of the task
http://kamalia.fkip.unej.org/ website.
The Function of Microtome
Microtomy is a
method for the preparation of thin sections for materials such as bones,
minerals and teeth, and an alternative to electropolishing and ion milling.
Microtome sections can be made thin enough to section a human hair across its
breadth, with section thickness between 50 nm and 100 µm.
Microtome should be
covered with plastic, or put back in the box when not in use. Do not move
microtome by holding the moving parts, as they may interfere with the accuracy.
Before and after use, preferably paraffin microtome cleared of debris by wiping
with a cloth that has been dampened with xilol. Microtome must be oiled to
prevent wear and congestion.
Why should preferably
paraffin microtome cleared of debris by wiping with a cloth that has been
dampened with xilol?
As i know it caused
the function of xilol that used for cleaning paraffin microtomes of debris can
damage the coating of fungus on the lens. so expect microtome maintained
properly. besides the advantages of xilol is a commonly used, inexpensive, and
works fast
1. ULTRASONIC CLEANER UNIT
Based on the topics
that I downloaded, Ultrasonic Cleaner Unit
is a tool to clean by using ultrasonic waves so that we need not rub or
scrape dirt stick to the goods that are difficult to clean.
2. The Function
The function is to suitable
for cleaning like Glasses, jewelry, dentistry equipment, printer head,
comb, tattoo equipment, dentures, watches, and so forth.
3. How to use it
4. How to care it
After use it dont forget to turn off the tools. Then it
should be stored at room temperature and do not put the damp. This tool can
also be stored in a special cupboard. To clean this material just clean with
dry cloth and make sure that the machine in off condition.
For the power
source, It does need electricity, as "An Ultrasonic generator energizes
the transducers. The generator transforms the electrical energy from the power
source into a suitable form for efficiently energizing the transducers at the
desired frequencies. The generator produces a electronic signal of high voltage
and sends it to the transducers. When the transducers receive the signal they
will respond by changing shape as long as the signal is applied. The response
range of the transducer determines the frequency of the generator. Since the
response range of the transducer is narrow the signal from the generator must
be close to the response range of the transducer", so the power source is depend on the type of
ultrasonic claner it self. but some source
telling battery as their source because all of them discuss about
portable ultrasonic cleaner.
2. DESICCATOR OR EKSIKATOR
1. Description
Various Desiccator or eksikator
Desiccator /
eksikator there are two kinds, namely:
1. Ordinary
Desiccators
2. Vacuum desiccator (Vacuum)
So what is
different between Ordinary Desiccators and Vacuum desiccator (Vacuum)???
1. Ordinary
Desiccators
Ordinary
desiccators is to maintain low humidity at a pressure less than 20 mmHg or the
other pressures specified in the monograph. does not have a valve that can open
the lid, so it can not connect the hose to the pump.
Vacuum desiccator
on the lid there is a valve that can open the lid, which is connected by a hose
to the pump.
2. The Function
• The storage of samples should be
free of water
• Drying
and cooling the sample that will be used to test the moisture content
3. How to use it
1.
How to open a closed desiccator is by sliding
sideways.
2.
Put new sample out of the oven or to be dried and cooled
3.
Then put the cap back in the same way, namely by
opening earlier in the sliding laterally.
4.
Notice the silica gel that serves as a water
absorbent money. Silica gel absorbs moisture could still blue, if silica gel
has changed to pink it needs to be heated in the oven at 105 ° C until the blue
color again. The form of pink color is caused by chemical fillers or material will
desiccator dried or extracted
4.
How to care it
After using desiccators, desiccator should be
kept private, so desiccator safe and protected from damage. otherwise it uses
dseikator should follow the instructions properly so durable desiccator.
1. Description
Incubator
is a place to keep something in several temperatures. There are some types of
incubator, just like egg incubator, microbiology incubator, and baby incubator.
2. The Function
In
biology, an incubator is a
device used to grow and maintain of course microbiological cultures or cell
cultures. Incubators are also used in the poultry industry to act as a
substitute for hens.
3. How to use it
Set a temperature
on the thermostat and when the temperature dips below this point, a heating
element comes on(electrical element is common). One the temperature reaches
another point, the heating element is turned off. It keeps whatever is in it
warm and alive.
Keep incubator in a
dry place and don’t get sunlight directly. Keep the door close and don’t open
the door too often to keep the temperature inside.
4. DIAL O GRAM BALANCE
1. Description
Specification
of Tools
Ohaus 310-00 Dial-O-Gram
Balance.High precision accuracy, no leveling required. 310 gram capacity x 0.01
gram resolution
|
Specification
|
|
|
Power
|
None
|
|
Main Color
|
White
|
|
Display
|
Dial & beams
|
|
Tare Feature
|
Yes
|
|
Weighs With
|
Suspended pan
|
|
Platform Size
|
0.5" deep x 3.5" diameter
|
|
Scale Size
|
18" x 12" x 9"
|
|
Weighing Modes
|
1
|
Then i asked, “is it possible to
dial o gram balance showed less precise measurements that we do?” and the
answer is Errors include: 1. weighing error when first measured but not scala
gauge at zero 2. the calculation results when adding the number of arms balance
and dial 3. observer error when viewing scala gauge 4. Objects measured
<0.01 grams, so the accuracy is less accurate 5. presence of external
factors such as damage to equipment and other.
2. The Function
The tool have
function to measure mass of object with minute 0,01 gram.
3. How to care it
- Before you use the tool, you
must know the condition of tool
- You must use the tools
carefully
- After you use the tool, you
should back the condition like a first
- Store the tool in room store,
room store must in good condition
you must arrange the humidity, temperature and light
5. INSECT NET
Insect nets are
made from a lightweight and strong material, which is muslin and calico. Long
stalks nets about 75-100 cm long and 50 cm nets. Mouth open net with a diameter
of about 30 cm. Circle frame made of wire mesh mouth hard and strong. The
length of muslin bags about two times the length of the net mouth diameter
circle. Insect nets can be used in two ways, namely Swung at the plant and Ran
around planting.
Insect net include
in laboratory tools because insect nets can be used to catch insects. Insects
that can be used as an object of observation in biology so that the tool can be
inserted in a particular laboratory biology. To use the lab equipment you could
ask for help in laboratory workers.
2. the Function
3. How to care it
For treatment of
insect net is not difficult, among others:
a. Using insect nets
as needed. That is to catch insects in the air to use the net active air as
well as water nets and nets swinging.
b. After use,
insect nets are stored in a safe place and prevented from reach of children.
6. RESPIROMETER
Respirometers
are designed to measure respiration either on the level of a whole animal
(plant) or on the cellular level. These fields are covered by whole animal and
cellular (or mitochondrial) respirometry, respectively.
2. The Function
A
respirometer is a device used to measure the rate of respiration of a living
organism by measuring its rate of exchange of oxygen and/or carbon dioxide.
They allow investigation into how factors such as age, chemicals or the effect
of light affect the rate of respiration.
3. How to use it
A
simple whole animal respirometer designed to measure oxygen uptake or CO2
release consists of a sealed container with the living specimen together with a
substance to absorb the carbon dioxide given off during respiration, such as
soda lime pellets or cotton wads soaked with potassium hydroxide. The oxygen
uptake is detected by displacement of manometric fluid in a thin glass U-tube
connected to the container. When the organism takes in oxygen it gives off an
equal volume of carbon dioxide. As this is absorbed by the soda lime, air is
sucked in from the U-tube to keep the pressure constant, displacing the liquid.
The rate of change gives a direct and reasonably accurate reading for the
organism's rate of respiration.
As
changes in temperature or pressure can also affect the displacement of the
manometric fluid, a second respirometer identical to the first except with a
dead specimen (or something with the same mass as the specimen in place of the organism)
is sometimes set up. Subtracting the displacement of the second respirometer
from the first allows for control of these factors.
7. SOIL TESTER
1.
Description
A soil test is the analysis of a
soil sample to determine nutrient and contaminant content, composition and
other characteristics, such as acidity or pH level.Soil testing is often
performed by commercial labs that offer a variety of tests, targeting groups of
compounds and minerals. There may be some advantage to using a local lab that is
familiar with the chemistry of the soil in the area where the sample was taken.
This enables technicians to recommend the tests most likely to reveal useful
information.
Then i asked “,why does usually the
best time of soil tests can be done when spring? and how if we do it when in
another season?” and the answer is The purpose of soil testing program in the
spring is to make farmers aware of fertilizer use efficiency. where the
suitability of fertilizer can help to get the desired level. Test the soil brought
increased agriculture production. Soil tests done to determine the amount and
type of fertilizer are needed for different types of plants that vary from
field to field and even on the same land. Soil tests helps to ensure maximum
profits by providing the right amount of fertilizer at the stand. Without a
soil test is difficult for farmers to apply the right kind of fertilizer. Using
the wrong fertilizer reduces crop yields. Soil testing is usually done to find
out its nutrients. besides, taah testing was also conducted during the fall
(after harvest), it aims to determine the condition of the soil fertility so
that we can adjust fertilizer for the next planting season. So i think soil
tester can also use for another season.
1. This function
for measurement Ph and soil hygro with its units
2. Tests
are usually performed to measure the expected growth potential of a soil.
4. Soil
testing is used to facilitate fertilizer composition and dosage selection for
land employed in both agricultural and horticultural industries.
5. Determines
potential toxicities from excessive fertility and inhibitions from the presence
of non-essential trace minerals.
6. The test
is used to mimic the function of roots to assimilate minerals. The expected
rate of growth is modeled by the Law of the Maximum.
3.
How to use it
1. put
on the tip of tool into the soil until their cell site in the soil and wait for
minutes letter
2. looking
the scale for detect the power hydrogen (pH)
3. Pressing
the bottom beside side the tool for determining the hygro solid after waiting
for a few minutes
4.
How to care it
-Don’t
take in the higro condition (lembab) because can corrosion.
-After
use it, we must clean it with sterril cotton
-After
use it we must also entering it to the
its box
8. PHOTOMETER
1. Description
1.
Monitor,
serves to show how much light intensity is measured.
2.
Detectors,
used to detect or determine the intensity of the light.
3.
Cable,
used to connect the detectors with Photometer.
4.
Button
controls, used to turn on and off Photometer, and to determine the intensity of
the use.
Based on
my asked “Is there any other types of Photometer?”, i know that No, actually
the name Photometer not only used by tools that I described. There is another
one called Photometer instrument is a device used to measure and adjust the light
on the camera.
2. The Function
Photometer
is an instrument used to measure the intensity of light or radiation. Or it
could be said that "Photometer" is a common tool used to measure how
much light intensity.
1. Turn on
the photometer by turning the control knob.
2. Set the
size of the intensity of the use.
3. Place
the detector on the light to be measured.
4.On the monitor will show how
much the intensity of the light produced.
5. When
finished turn off the photometer and store in a safe place.
4. How to care it
After
use, should be turned off to save power Photometer Photometer. Photometer then
put in a safe place to avoid damage..
9. MICROSCOPE
1.
Description
In this introductory biology
course, you will be using two type of microscope. The compound microscope and
the dissecting microscope, it is imperative that you learn how to handle and
care for they are expensive tools. It is also important that you develop good microscope
technique because you will be asked to take critical micros couple examinations
throughout this course. You will certainly conserve a great deal of time and
observe much more of the fine detail of spearmen if you became proficient. Now
in the use of the microscope (Robert ; 1993).
2.
The Function
The microscope is a tool used to
see objects that are very small that can’t be observed with the naked eye
3.
How to use it
1. Place
the microscope in the light , open the diaphragm until maximum;
2. Arrange
the position of the flat/concave mirror so that the condenser glass became
light;
3. Increase
the condenser until maximum by rotating the condenser button;
5. Pull
down the tube microscope until objective lens nearly touching the cover glass;
6. Look
through the ocular lens, a prepared until focus by turning regulator coarse and
smooth control.
Note
: when using microscope, using magnification of ocular lens and objective lens from
weak to coarse. Arrange slit diaphragm until adequate lighting.
4.
How to care it
1. Do not
direct the reflector to the light source; light exposure can injure your eyes.
2. Start
with using the weakest objective lens magnification in each observation.
3. Make
sure that the slide is covered by the glass cover.
5. Do not
touch the lens with your fingers, the dust from your fingers can stimulate
fungus growth on the lens.
6. Avoid
direct contact between the objective lens and the slide object because it can
damage the lens.
7. Clean
the lens with cloth or lens tissue.
8. Do not
keep the microscope in a humid place. If you place it in a cabinet. Place a
lamp to avoid humidity. If necessary, keep the microscope in a container with silica
gel.
9. Carry
the microscope with two hands. Keep one hand on the microscope base and the
other underneath the arm.
If there is no price difference
between the type of microscope that one type to another?? Actually of course
not because the actual price of the microscope in accordance with its type.
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10. CONDUCTIVITY METER
Conductivity meter has the
following sections.
1.
Monitor, used to tell how big the conductivity of an object.
2.
On / Off button is used to turn on and off conductivity meter.
3.
Detectors / Testimeter, serves to detect konductivitas a material is measured.
4.
Connecting cables, used to connect the meter with a conductivity detector.
2.
The Function
3.
How to use it
How to use this tool are as
follows.
1. Place
objects or substances to be measured conductivity.
2. Turn the
ON button on the conductivity meter and insert or install detectors on objects
/ substances were observed.
3. On the
monitor conductivity meter will show how much the conductivity of an object or
substance.
4. Press
the Off button to turn off the conductivity meter.
5. Clean
the conductivity meter after use and store in a dry place
4.
How to care it
1. put on dry place, dont put on wet place.
2. clean the dirt on the tool.
3. after use the tool, place on cupboard.
11. HYGROMETERS
1.
Description
Who first discovered the
Hygrometer?
Based on the literatur the first is
guillaume amontons but in literatur is many difference argument about the first
discovered hygromater.
So what is on his mind when
creating a hygrometer??? I still dont know it till right now.
2.
The Function
Hygrometers serves to measure the
level of moisture in a given place
By putting in place the measured
humidity. Then wait and read the scale, the scale of moisture is usually marked
with the letter "h" or if the temperature by degrees celcius.
4.
How to care it
After use hygrometers should be
cleaned before storing to prolong resistance hygrometers. Save hygrometers in
place that is not too dry and not too moist.
12. THERMOMETERS
1.
Description
A thermometer usually consist of a
containing hollow glass pipe of hydrogen mercury or alcohol, and dilution
tabletop is air vacuum. Thermometer made pursuant to principle that hydrogen
volume will change if heated or made cool. Hydrogen volume will increase if
heated, while if made cool by hydrogen volume will decrease. Go up or go down
the hydrogen him used as by reference to determine temperature a[n object.
Hydrogen upon which filler of thermometer there is two kinds of, that is
alcohol and mercury. So, in the reality the hydrogen have some advantage and
disadvantage.
2.
The Function
Thermometer is Appliance used to
measure object temperature correctly and expressing it with thermometer angka.
a. Mercury Thermometers
1. Prior to the change in temperature, the volume of mercury is on the
initial conditions.
2. Changes in the ambient temperature around the thermometer mercury
response to changes in volume.
3. The volume of mercury will expand if the temperature increases and
will shrink when the temperature decreases.
4. The scale on the thermometer will indicate the temperature value
corresponding circumstances.
b. Alcohol
Thermometers
2. Changes in the ambient temperature around the thermometer responds to
changes in the volume of alcohol.
3. The volume of alcohol will expand if the temperature increases and
will shrink when the temperature decreases.
4. The scale on the thermometer will indicate the temperature value
corresponding circumstances.
c. Clinical Thermometers
Leaving the tip of the thermometer
under the tongue, put in the back of the mouth or under the arm. The mouth is
closed, allow up to 1 minute to measure body temperature. Remove the
thermometer and read the thermometer indicator. Under the arm (for children
under 3 years old)
Each finish is used to measure the
temperature of an object, you should use the thermometer in the clear lap, to
keep the temperature stable. Then keep the thermometer in place with a
temperature standard, meaning there should not be too cold and too hot.
Mercury includes hazardous
substances (often used "hard water") so that the mercury thermometer
dangerous if the tube broke. Actually what danger would occur if the mercury
touched one of of our body? The skin will blister and red and this is very
dangerous, so its use should be careful. And how if it occurs to us? if touch
bit of skin surface we can handle it by yourself with iodine and antiseptic and
cover with a bandage. but if it's serious we immediately took him to the
emergency room.
13. BAROMETER
1.
Description
Barometer , Term ' barometer'
introduced at 1665-1666 by a natural man
of science of so called Irlandia of Robert Boyle. The Word alighted from Greek
term of báros meaning ' weight, wight' and metron meaning ' size measure',
meaning air heavy classification.
2.
The Function
To know or measure air pressure.A
barometer is a scientific instrument used in meteorology to measure atmospheric
pressure. Pressure tendency can forecast short term changes in the weather.
Numerous measurements of air pressure are used within surface weather analysis
to help find surface troughs, high pressure systems, and frontal boundaries.
1. Putting down at place to be
measured by its air pressure
2. Note scale which is ditunjukan by barometer
3. Scale which is show by barometer represent
air pressure storey level
at area
4.
How to care it
After using this appliance , then
cleared of dust or dung ,then reentered
in depository cupboard
14. SECTION TOOLS / EQUIPMENT SURGERY
1.
Description
Surgical tool is a tool designed to be used for surgical activities, such
as dissecting animals, humans, and so on. Some sections are required in the manufacture
of botanical preparations
2.
The Function
Surgical instrument consisting of a
leather wallet that contains the following tools:
1. Tweezers
(the pointy end), is used to retrieve or pulling the organs of the animals were
sacrificed, organs separate from one another.
2. Scalpel.
Leaf blades mounted on a shaft surgical scalpel and used for skinning animals
are dissected, cut off body parts and so on. Leaf blades and stems knife is one
unit. The blades are of two kinds, namely the pointy toes and that led to no
taper. This model can be sharpened, while the generally thrown off course when
it is blunt.
4. Board surgery is used as a surgical
5. stemmed
needle (the tip bent, blunt), is used to remove the organs located at the
bottom, to trace the vein or artery to prevent damage.
3.
How to use it
Tweezers: 1. Holding the
center
2. Pinning objects to be studied
Scalpel: 1. Holding
his part
2. Using a knife to dissect / unlock objects
Scissors: 1. Holding
his part
2. Loosen the grip and then use scissors to dissect the object
Surgical board: 1. Setting up
the board
2. Placing objects on board surgery
Stemmed needle: 1. Objects on a
board stretched surgery
4
How to care it
Having used the tool
section of washed until clean, then wipe using a soft cloth to maintain the
shape and sharpness of the tools section. Save on air conditioning to be more
safe and secure condition.
15. PLANKTON NET
Plankton net is a net with a mesh size
adapted to plankton. The use of plankton nets in addition to practical samples also
obtained quite a lot. Ordinary net plankton nets made of nylon,
usually conical in various sizes, but the average leng this 4-5 times the diameter
of the net mouth.The net serves to filter the water and plakton the rein.
Must we sewed the nylon of plankton
net is cone? What is the function of that shape?. As i know, I think it's
easier to filter the water and plakton therein. Therefore caught plankton
depends on the size of the mesh size, the size of the mesh size used should be
tailored to the type or size of plankton to be observed
2.
The Function
1.Ring:
located above and serves as a binder and at owing rope plankton net. The ring is
usually made of iron. Ring diameteris different- different brands and types
depend on plankton net, but ingeneral,the diameter of this ring is 15 -25 cm.
3.Wire:
used to form the mouth of the net or net ting suit our wants and needs.
Diameter of the wire is usually 31 cm to 45 cm for phyto plankton and zooplankton.
4.Nets:
used usually of nylon material. Mesh size of the nets is typically 30-50 μm to 150-175
μm for phyto plankton and zooplankton, net length about 4-5 times the diameter
of the mouth of the net.
3.
How to use it
Using a plankton net is easy. The
trick is to drag the net through the water slowly. If you drag the net too
fast, the water entering the net will not have time to exit through the mesh -
no water going out means no more water coming in. No more water coming in means
no more plankton.
There are four ways to drag the net
through the water. The first is to tie the net to the stern of a boat and drag
the net behind. The trick here is to move the boat slow enough so the water
enters the net. The second method is to tie a weight to the net and lower the
net deep into the water. Then slowly draw the net up through the water column.
This technique works well if you are collecting plankton from a bridge that
spans deep water. The third method involves tying the net to a long rope. While
standing on the shore or a dock, swing the net back and forth, then let go, pitching
the net out into the water. Once it lands, slowly draw the net back to shore. The
fourth method is to attach the net to a long pole. The extendable poles that
window washers use are ideal. These can be purchased at home improvement
stores. Hold the end of the pol
The holes should be spaced
equidistant from each other with two sets of holes opposite each other.
Whether the weakness of the
plankton net? and from the side where the difficulty will be experienced when
using a plankton net? And the answer is because the main ingredient is the manufacture
of nylon plankton net, then the weakness is just not chlorine resistant. There
is no difficulty in using plankton nets during follow instructions, and use of
the plankton net is very simple.
16. OXYMETER
1.
Description
Pulse oximetry is a
non-invasive method allowing the monitoring of the saturation of a patient's
hemoglobin.A sensor is placed on a thin part of the patient's body, usually a
fingertip or earlobe, or in the case of an infant, across a foot. Light of two
different wavelengths is passed through the patient to a photodetector. The
changing absorbance at each of the wavelengths is measured, allowing
determination of the absorbances due to the pulsing arterial bloodalone, excluding
venous blood, skin, bone, muscle, fat, and (in most cases) nail polish.With
NIRS it is possible to measure both oxygenated and deoxygenated hemoglobin on a
peripheral scale (possible on both brain and muscle).
a. Pulse OxymeterDesktop,Monitor
screen larger, more feature complete and can usually be connected to PC monitor
screen. There is also an integrated Oxymeter with other medical monitoring
devices, such as special operations Oxymeter in space.
b. Hand-held
Pulse Oxymeter, Practical Oxymeter handful sized hands. Oxymeter is usually
used for homecare patients are still frequently check-ups to the hospital.
3.
How to use it
a. Main
Unit, which consists of the Menu Manager (settings menu), such as: Set Alarm,
Time, Setting Maximum and Minimum Levels of SpO2 and HR, etc.
c. LED
Monitor: screen display for DTA-data value (amount) of oxygen within the
patient's body such as the heart rate data, such as graphs or numbers. For this
type of desktop Oxymeter usually LED Monitor can be connected using or PC
computer.
d. Finger
Sensor: special clamps to be mounted on the patient's finger. Equipment
specially shaped "clamp" equipped infra-red to a very sensitive
sensor to measure oxygen levels in the patient's body. Between 'clamp finger'
with oximeter device connected by cable a monitor
4.
How to care it
a. After
use, place Oxymeter on a clean place or in the cupboard.
b. If
Oxymeter dirty, immediately wipe using a cloth or tissue
c. Do
not drop or slam, because it can causeOxymeter damaged.
17.
AUXANOMETER
1.
Description
Auxanometer (
Auxesis = growth; Meter = unit of length) of an instrument to measure the
longitudinal growth of a plant, which consists of a pulley system fitted on the
bow scale needle or needles which can scratch the cylinder.
Auxanometer is a
tool to measure the longitudinal growth of a plant, which consists of the
control system are equipped the needle on the scale arc or needles which can
scratch the cylinder player.
3. How to use it
How to use
auksanometer is as follows.
1) Tie a piece of string or thread at the end of the stem of
the plant in a pot that had been prepared. Thread is placed on the pulley is
placed just above the crop.
2) Then put the pulley pointing device which can rotate
following the rotation of the pulley.
4) Set the pointer to the string pulleys to move along the
arc before that had given scale.
5) Look for a few days arc accretion pointer and count how
high or long rod that.
But how can we
determine the longitudinal growth of plant by using auxanometer? to determine
the longitudinal growth of plant by using auxanometer you just look or observe
the needle scale that have pointed.
4. How to care it
• Place auxanometer at room temperature
chamber
• Do periodic cleaning
If you have
disassembel before keep it and you have take it in the cupboard or another
place that unreachable from dust, you just need clean it once in month or once
in two month. but if you not disassembel and not keep it in the cupboard you
should clean it every week
• Keep out of reach of children
• Do not clean the auxanometer are
made of iron with water. In order to not get rusty auxanometer
• Disassemble auxanometer if not
used in a long time, then keep it in the room temperature
Final task is to
create a journal or a diary about laboratory techniques. A story of how early
and what are the ups and downs in this course. Here I also tried to make the
appearance like a diary so that interesting to read. And of course working with
as much as possible.
"Life is an
adventure. And certainly there are ups and downs in it. So enjoy it all " J
Thank you Mrs.
Erlia Narulita, S.Pd., M.Si and Mrs. Kamalia Fikri, S. Pd., M. Pd which have
guided the course of this laboratory techniques. Without the guidance may not
easily through it. May all that has been learned can be useful to me, other
people, religion and country, especially for the development of laboratory techniques
that have been there. J
Signed
Bella
Rhea Lavifa Sanjaya
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